Thank you for the sample prepared, where I was able to observe the issue described.
After a careful review, we can confirm, that this is a bug in the Spreadsheet functionality. Therefore, we have included that bug in our backlog. I have also created a GutHub item
, where you could track the bug status.
As a small token of gratitude, I have updated your Telerik points.
Note, that at this stage, I won't be able to offer you a viable workaround for this bug. Therefore, I would suggest you to track the GitHub issue and update the version of Kendo as soon as the fix is available.
Telerik by Progress